To the Editor.—I was amazed to read the report on hairy elbows by Drs Andreev and Stransky in the June Archives (115:761, 1979) only a few weeks after I had seen an identical case while attending church. Naturally, I had to guess the age (about 7 years) of this fair-haired boy who was otherwise quite normal. His younger brother did not appear to have this condition.Letters will be published as space permits and at the discretion of the editor. They must be typewritten, double-spaced, with not more than five references and two figures in duplicate; they should not exceed 500 words in length. Three copies of all letters are required and they are subject to editing. Letters are not acknowledged. For other details, including copyright procedure, see "Instructions for Authors."